# How to Add the Humanizer Plugin to Claude: Command Reference Guide

> Quickly add the Humanizer plugin to Claude with our command reference guide. Discover the precise commands to register and activate this essential tool for your environment.

- Repository: [Siqi Chen/humanizer](https://github.com/blader/humanizer)
- Tags: command-reference
- Published: 2026-09-06

---

**Use the Claude Code command `/plugin marketplace add blader/humanizer` followed by `/plugin install humanizer@humanizer` to register and activate the Humanizer plugin in your environment.**

The Humanizer plugin, maintained in the `blader/humanizer` repository, transforms robotic or AI-generated text into natural, human-like prose using 35 distinct rewrite patterns. To enable this functionality inside Claude Code, you must execute specific marketplace commands that register the plugin's JSON manifest and load its skill definitions. Understanding the correct command sequence to add the Humanizer plugin to Claude ensures immediate access to advanced text humanization capabilities.

## Installing the Humanizer Plugin

Adding the plugin requires a two-step workflow: first registering it from the marketplace, then installing it into your active session.

### Step 1: Add the Plugin from the Marketplace

Begin by registering the plugin with Claude's marketplace system. According to the documentation in [`README.md`](https://github.com/blader/humanizer/blob/main/README.md) (lines 201-203), execute:

```bash
/plugin marketplace add blader/humanizer

```

This command fetches the repository and reads the [`.claude-plugin/plugin.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/plugin.json) manifest file. The manifest tells Claude where to locate the skill definitions—in this case, pointing to the [`SKILL.md`](https://github.com/blader/humanizer/blob/main/SKILL.md) file that contains the rewrite logic and prompt instructions.

### Step 2: Install the Plugin

After registering the plugin, activate it within your Claude Code environment:

```bash
/plugin install humanizer@humanizer

```

This second command creates the executable interface and makes the `/humanizer` command available in your current session. Without this installation step, the marketplace registration remains inactive.

## How the Plugin Architecture Works

The Humanizer plugin uses a manifest-based architecture to integrate with Claude Code. The [`.claude-plugin/plugin.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/plugin.json) file serves as the registration entry point, defining metadata and specifying the skill location. This configuration directs Claude to load [`SKILL.md`](https://github.com/blader/humanizer/blob/main/SKILL.md), which houses the 35 rewrite patterns and the prompt logic that drives the humanization process.

## Using the Plugin After Installation

Once installation completes, invoke the humanization skill using:

```text
/humanizer:humanizer

```

Alternatively, type `/humanizer` to trigger the skill directly. The command processes your selected text through the patterns defined in [`SKILL.md`](https://github.com/blader/humanizer/blob/main/SKILL.md), applying natural language transformations to reduce robotic tone and improve readability.

## Summary

- **Add the plugin**: Use `/plugin marketplace add blader/humanizer` to register the repository and load the manifest from [`.claude-plugin/plugin.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/plugin.json)
- **Install the plugin**: Run `/plugin install humanizer@humanizer` to activate the command in your Claude Code session
- **Skill source**: The plugin logic resides in [`SKILL.md`](https://github.com/blader/humanizer/blob/main/SKILL.md), referenced by the JSON manifest
- **Invocation**: Access the tool immediately after installation by typing `/humanizer` or `/humanizer:humanizer`

## Frequently Asked Questions

### What is the exact command to add the Humanizer plugin to Claude?

The exact command is `/plugin marketplace add blader/humanizer`. This single command fetches the plugin metadata from the GitHub repository and registers it with your local Claude Code installation by reading the [`.claude-plugin/plugin.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/plugin.json) manifest.

### Do I need to install the plugin after adding it to the marketplace?

Yes, adding and installing are distinct operations. After executing the marketplace add command, you must run `/plugin install humanizer@humanizer` to make the plugin active and enable the `/humanizer` command interface in your current workspace.

### Where does Claude find the Humanizer skill definitions?

Claude locates the skill definitions through the [`.claude-plugin/plugin.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/plugin.json) file, which specifies the path to [`SKILL.md`](https://github.com/blader/humanizer/blob/main/SKILL.md). This markdown file contains the 35 rewrite patterns and the prompt logic that define how text is transformed into natural language.

### Can I use the Humanizer plugin immediately after installation?

Yes, once the installation command completes successfully, you can immediately invoke the plugin by typing `/humanizer` or `/humanizer:humanizer` in your Claude Code interface without requiring a restart or additional configuration.